Physician Profile
Based in Ayer, MA, Michael Jonathan Older, M.D. is listed in the NPI registry under internal medicine. Michael Jonathan graduated from Tufts University School of Medicine in 1988. Michael Jonathan is also listed as specializing in gastroenterology. Medicare claims data shows Michael Jonathan provided 443 services to 397 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Source: NPPES NPI Registry
190 GROTON RD SUITE 190
Ayer, MA 01432
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
Digestive
Exams & Consultations
Heart & Circulation
Heart health
Imaging referral
Immunizations
Lab tests
Lungs & Breathing
Metabolic & Weight
Minor procedures
Office procedures
Office Procedures
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
443 services · 397 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
66 |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
42 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
22 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
17 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
160 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
41 |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
27 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
27 |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
14 |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Michael Jonathan Older is an internal medicine in Ayer, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Michael Jonathan Older is listed at 190 Groton Rd Suite 190, Ayer, MA 01432. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (978) 772-3547. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Michael Jonathan Older's National Provider Identifier is 1194757625. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Michael Jonathan Older attended Tufts University School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
Michael Jonathan Older has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Michael Jonathan Older performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm and biopsy of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Michael Jonathan Older. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.